Related by context. Frequent words. (Click for all words.) 70 ENSCO International 68 Ensco International 67 Nabors Industries Ltd. 66 NYSE PDE 64 GeoResources Inc. 64 Approach Resources 63 Schlumberger NYSE SLB 63 Allis Chalmers Energy 63 Diamond Offshore Drilling 63 Crimson Exploration 62 Harvest Natural Resources 62 Hercules Offshore 61 Concho Resources Inc. 61 Newfield Exploration Company 61 Oceaneering International 61 Schlumberger SLB 61 Comstock Resources 60 Overseas Shipholding 60 Brigham Exploration Company 60 Eagle Bulk Shipping 60 NYSE NOV 60 Transocean NYSE RIG 60 McMoRan Exploration Co. 60 NYSE HAL 60 Dril Quip 60 Overseas Shipholding Group 60 Rosetta Resources 60 NYSE RRC 60 Cal Dive International 60 National Oilwell Varco 59 Newfield Exploration 59 Hercules Offshore Inc. 59 Schlumberger Limited 59 Transocean RIG 59 NYSE TSO 59 FMC Technologies Inc. 58 NYSE HES 58 Whiting Petroleum 58 Pioneer Drilling 58 Cheniere Energy Inc. 58 Royale Energy 57 Carrizo Oil & 57 Cheniere Energy 57 NYSE FTI 57 Parallel Petroleum 57 Ultra Petroleum 57 Pacific Rubiales Energy 57 Vanguard Natural Resources 56 NYSE OSG 56 Helix Energy 56 Callon Petroleum Company 56 Bronco Drilling 56 Patterson UTI Energy 56 Whiting Petroleum Corporation 55 Petrohawk Energy Corporation 55 DryShips Inc. 55 NYSE PBR 55 Halliburton HAL 55 offshore drilling contractor 55 BPZ Energy 55 Boardwalk Pipeline Partners LP 55 Cimarex Energy 55 Ensco 55 Interesting Options Volume 55 Gastar Exploration Ltd. 55 Crosstex Energy 55 Geokinetics 55 Trico Marine Services 54 EXCO Resources Inc. 54 Quanta Services 54 Brigham Exploration 54 Star Bulk Carriers 54 Sempra Energy NYSE SRE 54 Tsakos Energy Navigation 54 NYSE XOM 54 Chevron NYSE CVX 54 Corporation NYSE CHK 54 NYSE URS 54 NYSE XTO 54 Exxon Mobil NYSE XOM 54 NYSE ACI 54 National Oilwell 54 Gasco Energy 54 Enerplus Resources Fund 53 Occidental Petroleum Corporation 53 Golar LNG 53 Diamond Offshore 53 Hornbeck Offshore Services 53 Grant Prideco 53 XTO Energy Inc. 53 Cimarex Energy Co. 53 Teekay Tankers 53 TDW 53 Hornbeck Offshore 53 Martin Midstream Partners 53 DryShips 53 Pioneer Natural Resources 53 Kayne Anderson Energy 53 Longtop Financial Technologies 53 Nabors Industries 53 NFX